3918641
Fuel Supply Tube
Cummins®

Introduction

The Cummins 3918641 Fuel Supply Tube is a critical component in the fuel systems of heavy-duty trucks, designed to ensure efficient fuel transfer from the tank to the engine. This part is essential for maintaining engine performance and fuel efficiency, playing a vital role in the overall operation of the vehicle ¹.

Basic Concepts of Fuel Supply Tubes

A fuel supply tube serves as a conduit for fuel, carrying it from the storage tank to the engine. It is crucial for maintaining engine performance and fuel efficiency by delivering fuel under the correct pressure and in the right quantity. The tube must withstand the pressures and temperatures within the fuel system while resisting corrosion and wear ².

Role and Function of the 3918641 Fuel Supply Tube

The Cummins 3918641 Fuel Supply Tube provides a direct pathway for fuel to travel from the tank to the engine, ensuring a consistent flow of fuel for optimal engine performance. It is designed to handle the specific pressures and fuel types used in heavy-duty truck engines, contributing to smooth and efficient engine operation ³.

Key Features

This Cummins part is constructed from durable materials that resist the corrosive effects of fuel. Its design includes reinforced connections to prevent leaks and a smooth interior to ensure unobstructed fuel flow. These features enhance the tube’s performance and longevity under demanding conditions.

Benefits

Using the Cummins 3918641 Fuel Supply Tube can improve fuel efficiency by ensuring uninterrupted fuel delivery to the engine. This consistent fuel supply supports enhanced engine performance and reliability, reducing the likelihood of fuel system failures.

Troubleshooting and Maintenance

Common issues with this part may include leaks, blockages, or damage from wear and tear. Troubleshooting involves inspecting the tube for damage, checking connections, and ensuring unobstructed fuel flow. Regular maintenance, such as cleaning and inspecting the tube, can help ensure optimal performance and longevity. Following the manufacturer’s guidelines for maintenance and replacement is crucial to prevent issues.

About Cummins

Cummins Inc. is a global leader in designing, manufacturing, and distributing engines, filtration, and power generation products. Known for its innovation and commitment to quality, Cummins produces high-quality automotive components that meet the demanding requirements of heavy-duty applications. The company’s focus on quality, performance, and reliability is evident in its wide range of products, including the Cummins 3918641 Fuel Supply Tube.

Role of Part 3918641 Fuel Supply Tube in Engine Systems

The Cummins 3918641 Fuel Supply Tube is integral to the fuel delivery system of various engine setups. It facilitates the transfer of fuel from the tank to the filter and subsequently to the pump. This tube is engineered to withstand the pressures and temperatures of fuel transport, ensuring a consistent and reliable fuel supply.

In conjunction with the fuel filter, the Fuel Supply Tube plays a significant role in maintaining fuel purity. It delivers fuel to the filter, where contaminants are removed before the fuel reaches the engine, contributing to efficient combustion and prolonging engine life.

When integrating a fuel pump conversion kit, the Fuel Supply Tube’s role becomes even more critical. It must be compatible with the new fuel pump’s requirements, providing the necessary fuel flow rate and pressure. The tube’s design must accommodate any changes in fuel dynamics introduced by the conversion kit, ensuring optimal engine performance.

The Fuel Supply Tube also interfaces with the fuel filter plumbing. This connection is vital for maintaining a sealed and leak-free fuel system. Proper installation and sealing of the tube within the plumbing system prevent fuel leaks, which could pose safety hazards and affect engine performance.

Conclusion

The Cummins 3918641 Fuel Supply Tube is a key component in the fuel delivery network, working in tandem with the fuel filter, fuel pump conversion kit, and fuel filter plumbing to ensure a steady, clean, and pressurized fuel supply to the engine. Its reliable performance is essential for the overall efficiency and safety of the engine system.